Electric Circuits

Question 1

Ohm’s Law

Answer 1

Current through a conductor is directly proportional to the potential difference across the conductor at constant temperature

Question 2

Factors affecting resistance of a conducting wire

Answer 2

• Length (longer = greater resistance)
• Thickness (thinner = greater resistance)
• Type of material
• Temperature (higher temperature = greater resistance)

Question 3

Series circuits

Answer 3

• Current is equal at all points
• Potential difference is directly proportional to resistance

Question 4

Parallel circuits

Answer 4

• Voltage is equal across each branch
• Current is inversely proportional to resistance